Nota Kenko Please Note; 1. When using extension tubes the lens will not focus to infinity. The focus range will be greatly limited to a very close focusing distance. 2. There is light fall off when using any extension tube, sometimes the equivalent of 3 f-stops of light is lost when using multiple extension tubes together. This light lost can affect the camera’s ability to auto focus. Manual focusing is recommended should the lens begin to “hunt” (not lock onto the subject). 3. Canon EF-S lenses will not mount on the KENKO DG Extension Tube Set. These lenses include but not limited to EF-S 10-22, EF-S 17-85, EF-S 18-55, and EF-S 60mm Macro. 3. Nikon “D” information is not transmitted because the lens is focusing closer than its programmed to focus. 4. Kenko Auto Extension Tubes are not auto focus compatible with Nikon AF-s (Silent Wave) lenses, manual focusing is required with these lenses.” !!! Pietro
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